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Question #46535
The Question
During the replication cycle of the Human Immunodeficiency Virus (HIV) within CD4+ T-lymphocytes, the provirus heavily relies on host cellular machinery. Which of the following statements regarding the processing of viral transcripts is INCORRECT?
Options
- A.
The integrated viral DNA utilizes the host's RNA polymerase II to synthesize viral primary transcripts in the nucleus.
- B.
HIV primary transcripts completely bypass the host's spliceosome machinery to ensure rapid, direct translation of viral polyproteins in the cytoplasm.
- C.
Viral regulatory proteins modulate host splicing factors, prioritizing viral transcript processing over host pre-mRNA.
- D.
The hijacking of host post-transcriptional machinery contributes to the disruption of cellular homeostasis and the eventual decline of the T-lymphocyte.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Tat_Protein|Spliceosome|HIV_mRNA
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often assume that because viruses are distinct pathogenic entities, they utilize entirely independent machinery for all replication steps.
While HIV brings its own Reverse Transcriptase (as per NCERT), once integrated as a provirus, its transcription and post-transcriptional modifications (splicing) are entirely dependent on host nuclear machinery.
The trap exploits the failure to synthesize eukaryotic post-transcriptional processing rules (from 'Molecular Basis of Inheritance') with retroviral replication (from 'Human Health and Disease').
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Human Health and Disease - Class 12 |
| Concept | HIV Replication Cycle |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |